When Jennifer Aniston and Justin Theroux walk down the aisle, you can expect it to be “the funniest Hollywood wedding ever,” RadarOnline.com has learned.

According to a source, it will be no serious and staid affair when the Friends funnygal, 45, and her actor fiance, 42, finally say their “I do’s”.

“Jen and Justin will be cheered on by some of the most hilarious stars in entertainment as the guest list will include Ben Stiller, Ellen DeGeneres, Chelsea Handler, her Friends co-stars like bestie Courtney Cox, and the cream of comedy writers, directors, actors and actresses,” the source said.

And Aniston and Theroux are sure to inspire the light atmosphere! “Justin’s one of the funniest guys in Hollywood and Jen just bounces off him to perfection. They truly are a match made in comedy heaven,” the source noted.

The couple met in 2011 while making the movie comedy Wanderlust and announced their engagement in August 2012.

As Radar recently reported, health nut Theroux made Aniston and her girl crew laugh by begging his future bride for an alcohol-free wedding!